What led to Elizabeth Barraza a Tomball, Texas woman being shot dead as she set up for a garage sale to pay for an upcoming anniversary trip?

Elizabeth Barraza, 29, was in the driveway of her Tomball home around 7 a.m. Jan. 25 getting ready for the sale when someone emerged from a black pickup truck, approached her, exchanged some words before opening fire and taking off, Click 2 Houston reported.

Barraza was pronounced dead at Memorial Hermann Hospital — the same facility where she and her husband, Sergio Barraza, had spent many hours volunteering and doing charity work — the distraught husband saidat a news conference.

‘My wife, Liz, was a beautiful person … with the kindest of souls,’Sergio Barraza said. ‘Tragically, someone stole that away from us on the morning of January 25. I’d just left for work that morning, and I’m just so happy that the last words I got to say to my beautiful wife were, ‘I love you.’’

‘I don’t understand how someone could do this to her,’ the husband added. ‘I had to trade our fifth anniversary for her funeral. We need justice for Liz. I need justice for Liz. I love you, Liz.’

Barraza’s dad, Bob Nuelle, said his daughter was trying to make a little more spending money ahead of the anniversary trip, which was scheduled for two days after her death.

‘We never imagined a life without her and we still can’t,’ Nuelle said. ‘We never will.’

Neighbors said that they called 911 after hearing a series of shots.

‘It was three gunshots, real fast, one after the other,’ local Candy Ellis recalled. ‘Waited a couple of seconds and then it was another gunshot.’

Yet to be necessarily understood is what motivated the shooter.

The Harris County Sheriff’s Office is still investigating whether the shooting was a random or targeted attack, and whether the shooter was a man or woman. Crime Stoppers of Houston is offering a $20,000 reward for any information leading to the charging or arrest of the person behind the slaying.

Elizabeth Barraza’s husband Sergio Barraza makes a tearful plea to the public to get his wife’s killer of the streets. “I had to trade our 5th anniversary for our funeral” …”We need justice for Liz” There is a 20K reward. #Abc13https://t.co/TNAynm6mjcpic.twitter.com/Cm48jbiak2

Surveillance tape offers clues into Elizabeth Barraza shooting death:

Latest reports tell of ‘grainy’ surveillance footage capturing the suspect, who appears to be a woman dressed in a light colored robe.

The video shows Barraza appearing to freeze at the sight of the shooter and taking a step back when they approach her, exchanging a few words.

Just eight seconds pass before the suspect lifts their arm and shoots her at point-blank rage, firing three times.

Barraza was an avid fan of Star Wars and Harry Potter. More than 100 loved ones and supporters waved lightsabers and wands at a memorial service held for her last week.

Money raised through a GoFundMe page called “Justice for Liz”will be donated to the Peter Mayhew Foundation — named after the actor best known for portraying Chewbacca in the Star Wars series.

Anyone with information is asked to call Crime Stoppers at 713-222-TIPS.

We’re asking for the public’s help in identifying the suspect responsible for fatally shooting Elizabeth Barraza. A cash reward of up to $20,000 is now being offered for any information. Please call 713-274-9100 or @CrimeStopHOU at 713-222-TIPS(8477). #HouNewspic.twitter.com/m9mSooi2Qt

Bob Nuelle is Elizabeth “Liz” Barraza’s dad. Someone shot her multiple times last Fri as she was setting up for a garage sale, she died. The suspect is still on the loose. A vigil for her starts at 7. She was a huge Star Wars fan & family asked people to bring light sabers @KPRC2pic.twitter.com/CfWM1hXSfc